Summary
A hygrometer is an instrument used to measure the amount of humidity and water vapour in the atmosphere, in soil, or in confined spaces. Modern electronic devices use temperature of condensation (called the dew point), or changes in electrical capacitance or resistance to measure humidity differences.
The maximum amount of water vapor that can be held in a given volume of air (saturation) varies greatly by temperature; cold air can hold less mass of water per unit volume than hot air. Temperature can change humidity. Most instruments respond to (or are calibrated to read) relative humidity (RH), which is the amount of water relative to the maximum at a particular temperature expressed as percent.
| Manufacturer | Buck Research Instruments LL.C. |
|---|---|
| Model | CR-2 |
| Serial No. | n/a |
| Type | humidity sensor |
| REGISTRY-Link | ↪ REGISTRY (6622) |
Contacts
No contacts available.
Available devices and Specifications
| Name | Model | Serial Number | REGISTRY-Link |
|---|---|---|---|
| Cryogenic Aircraft Hygrometer | CR-2 | 210M | ↪ REGISTRY (6623) |
| Cryogenic Aircraft Hygrometer | CR-2 | 218M | ↪ REGISTRY (6626) |
Specifications of CR-2 (without mounting)
Position
| Info | The CR-2 is installed in the cockpit behind the pilot seat. The air inlet is fastened to the mail door. |
| X | 0.0 none (no description given) |
| Y | 0.0 none (no description given) |
| Z | 0.0 none (no description given) |
Data logging, storage and archiving
Logged parameter
| Parameter | O2ARegistry Output Type | Unit |
|---|---|---|
| Coldfinger Temperature | temperature | °C |
| Mirror Temperature | temperature | °C |
| Pressure | pressure | mbar |
| Water content | volumetric water content | ppmV |
Rawdata storage on board
Data archiving on land
DMS
Documentation
Also see https://sensor.awi.de/ for calibration certificates of the sensors.